Byaidu PDFMathTranslate vulnerable to open redirect

published 2025-10-30 12 mo ago modified 2026-11-05 3 d ago also GHSA-pfrv-63w8-q7rq , PYSEC-2026-1760 , EUVD-2025-37013

cvss: 6.1; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.2%; EPSS 0.2% chance of exploitation in 30 days, percentile 13%
public exploits: 0; none known

An open redirect vulnerability exists in Byaidu PDFMathTranslate v1.9.9 that allows attackers to craft URLs that cause the application to redirect users to arbitrary external websites via the file parameter to the /gradio_api endpoint. This vulnerability could be exploited for phishing attacks or to bypass security filters.

CISA SSVC

Exploitation: Proof of concept is public
Automatable: no
Technical impact: partial
Assessed: 12 mo ago (2025-11-04)

Exploit prediction

0.23% chance of exploitation in the next 30 days, higher than 13% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CISA ADP	3.1	6.1	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
CNA	3.1	6.1	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Affected packages

ecosystem	package	affected	fixed in
pypi	pdf2zh	1 listed version	no fix listed

Classification

Weakness

CWE-601 URL Redirection to Untrusted Site

References

pdf2zh.com /
github.com /fai1424/Vulnerability-Research/tree/main/CVE-2025-50736
web
nvd.nist.gov /vuln/detail/CVE-2025-50736
advisory
github.com /Byaidu/PDFMathTranslate
package
hackmd.io /@fai1424/SJz7ttVWxe
web
pdf2zh.com
web
pypi.org /project/pdf2zh
package
github.com /advisories/GHSA-pfrv-63w8-q7rq
advisory

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary